/**
 * Created by jiachenpan on 16/11/18.
 */

export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (('' + time).length === 10) time = parseInt(time) * 1000
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return time_str
}

export function formatTime(time, option) {
  time = +time * 1000
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return (
      d.getMonth() +
      1 +
      '月' +
      d.getDate() +
      '日' +
      d.getHours() +
      '时' +
      d.getMinutes() +
      '分'
    )
  }
}

// 格式化时间
export function getQueryObject(url) {
  url = url == null ? window.location.href : url
  const search = url.substring(url.lastIndexOf('?') + 1)
  const obj = {}
  const reg = /([^?&=]+)=([^?&=]*)/g
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1)
    let val = decodeURIComponent($2)
    val = String(val)
    obj[name] = val
    return rs
  })
  return obj
}

/**
 *get getByteLen
 * @param {Sting} val input value
 * @returns {number} output value
 */
export function getByteLen(val) {
  let len = 0
  for (let i = 0; i < val.length; i++) {
    if (val[i].match(/[^\x00-\xff]/gi) != null) {
      len += 1
    } else {
      len += 0.5
    }
  }
  return Math.floor(len)
}

export function cleanArray(actual) {
  const newArray = []
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i])
    }
  }
  return newArray
}

export function param(json) {
  if (!json) return ''
  return cleanArray(
    Object.keys(json).map(key => {
      if (json[key] === undefined) return ''
      return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
    })
  ).join('&')
}

export function param2Obj(url) {
  const search = url.split('?')[1]
  if (!search) {
    return {}
  }
  return JSON.parse(
    '{"' +
      decodeURIComponent(search)
        .replace(/"/g, '\\"')
        .replace(/&/g, '","')
        .replace(/=/g, '":"') +
      '"}'
  )
}

export function html2Text(val) {
  const div = document.createElement('div')
  div.innerHTML = val
  return div.textContent || div.innerText
}

export function objectMerge(target, source) {
  /* Merges two  objects,
     giving the last one precedence */

  if (typeof target !== 'object') {
    target = {}
  }
  if (Array.isArray(source)) {
    return source.slice()
  }
  Object.keys(source).forEach(property => {
    const sourceProperty = source[property]
    if (typeof sourceProperty === 'object') {
      target[property] = objectMerge(target[property], sourceProperty)
    } else {
      target[property] = sourceProperty
    }
  })
  return target
}

export function toggleClass(element, className) {
  if (!element || !className) {
    return
  }
  let classString = element.className
  const nameIndex = classString.indexOf(className)
  if (nameIndex === -1) {
    classString += '' + className
  } else {
    classString =
      classString.substr(0, nameIndex) +
      classString.substr(nameIndex + className.length)
  }
  element.className = classString
}

export const pickerOptions = [
  {
    text: '今天',
    onClick(picker) {
      const end = new Date()
      const start = new Date(new Date().toDateString())
      end.setTime(start.getTime())
      picker.$emit('pick', [start, end])
    }
  },
  {
    text: '最近一周',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(end.getTime() - 3600 * 1000 * 24 * 7)
      picker.$emit('pick', [start, end])
    }
  },
  {
    text: '最近一个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 30)
      picker.$emit('pick', [start, end])
    }
  },
  {
    text: '最近三个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 90)
      picker.$emit('pick', [start, end])
    }
  }
]

export function getTime(type) {
  if (type === 'start') {
    return new Date().getTime() - 3600 * 1000 * 24 * 90
  } else {
    return new Date(new Date().toDateString())
  }
}

export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function() {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function(...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 */
export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'shallowClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach(keys => {
    if (source[keys] && typeof source[keys] === 'object') {
      targetObj[keys] = deepClone(source[keys])
    } else {
      targetObj[keys] = source[keys]
    }
  })
  return targetObj
}

export function uniqueArr(arr) {
  return Array.from(new Set(arr))
}

export function isExternal(path) {
  return /^(https?:|mailto:|tel:)/.test(path)
}

/**
 * 存储localStorage
 */
export function setStore(name, content) {
  if (!name) return
  if (typeof content === 'object') {
    content = JSON.stringify(content)
  }
  window.localStorage.setItem(name, content)
}

/**
 * 获取localStorage
 */
export function getStore(name) {
  if (!name) return
  let value = window.localStorage.getItem(name)
  try {
    value = JSON.parse(value)
    return value
  } catch (e) {
    // console.log(e)
    return value
  }
}

/**
 * 删除localStorage
 */
export function removeStore(name) {
  if (!name) return
  window.localStorage.removeItem(name)
}

// 设置sessionStorage
export function setSession(name, content) {
  if (!name) return
  if (typeof content === 'object') {
    content = JSON.stringify(content)
  }
  window.sessionStorage.setItem(name, content)
}
/**
 * 获取sessionStorage
 */
export function getSession(name) {
  if (!name) return
  let value = window.sessionStorage.getItem(name)
  try {
    value = JSON.parse(value)
    return value
  } catch (e) {
    // console.log(e)
    return value
  }
}

/**
 * 删除sessionStorage
 */
export function removeSession(name) {
  if (!name) return
  window.sessionStorage.removeItem(name)
}
// 获取URL后面参数
export function GetQueryString(name) {
  var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)')
  var r = window.location.search.substr(1).match(reg)
  if (r != null) return unescape(r[2])
  return null
}
// 获取host
export function getHost() {
  var _http = window.location.protocol
  var _hostname = window.location.hostname
  var _port = window.location.port
  var http = _http + '//' + _hostname + '/'
  if (_port) {
    http = _http + '//' + _hostname + ':' + _port + '/'
  }
  return http
}
// rem转换px
export function rem2px(rem) {
  var clientWidth = document.documentElement.clientWidth
  if (clientWidth) {
    return clientWidth / 750 * 100 * rem
  } else {
    return rem
  }
}
// 生成随机id
export function createRandomId() {
  return (Math.random() * 10000000).toString(16).substr(0, 4) + '-' + (new Date()).getTime() + '-' + Math.random().toString().substr(2, 5)
}
// 比较2个对象是否相等
export function isEqual(x, y) {
  // If both x and y are null or undefined and exactly the same
  if (x === y) {
    return true
  }

  // If they are not strictly equal, they both need to be Objects
  if (!(x instanceof Object) || !(y instanceof Object)) {
    return false
  }

  // They must have the exact same prototype chain,the closest we can do is
  // test the constructor.
  if (x.constructor !== y.constructor) {
    return false
  }

  for (var p in x) {
    // Inherited properties were tested using x.constructor === y.constructor
    if (x.hasOwnProperty(p)) {
      // Allows comparing x[ p ] and y[ p ] when set to undefined
      if (!y.hasOwnProperty(p)) {
        return false
      }

      // If they have the same strict value or identity then they are equal
      if (x[p] === y[p]) {
        continue
      }

      // Numbers, Strings, Functions, Booleans must be strictly equal
      if (typeof (x[p]) !== 'object') {
        return false
      }

      // Objects and Arrays must be tested recursively
      if (x[p] !== y[p]) {
        return false
      }
    }
  }

  for (p in y) {
    // allows x[ p ] to be set to undefined
    if (y.hasOwnProperty(p) && !x.hasOwnProperty(p)) {
      return false
    }
  }
  return true
}

/**
 * 获取style样式
 */
export function getStyle(element, attr, NumberMode = 'int') {
  let target
  // scrollTop 获取方式不同，没有它不属于style，而且只有document.body才能用
  if (attr === 'scrollTop') {
    target = element.scrollTop
  } else if (element.currentStyle) {
    target = element.currentStyle[attr]
  } else {
    target = document.defaultView.getComputedStyle(element, null)[attr]
  }
  // 在获取 opactiy 时需要获取小数 parseFloat
  return NumberMode === 'float' ? parseFloat(target) : parseInt(target)
}
// 获取滚动dom infiniteScroll里使用
export function getScrollview(el) {
  let currentNode = el
  while (currentNode && currentNode.tagName !== 'HTML' && currentNode.tagName !== 'BODY' && currentNode.nodeType === 1) {
    const overflowY = document.defaultView.getComputedStyle(currentNode).overflowY
    if (overflowY === 'scroll' || overflowY === 'auto') {
      return currentNode
    }
    currentNode = currentNode.parentNode
  }
  return window
}

export function hasClass(elem, cls) {
  cls = cls || ''
  if (cls.replace(/\s/g, '').length === 0) return false
  return new RegExp(' ' + cls + ' ').test(' ' + elem.className + ' ')
}

export function addClass(ele, cls) {
  if (!hasClass(ele, cls)) {
    ele.className = ele.className === '' ? cls : ele.className + ' ' + cls
  }
}

export function removeClass(ele, cls) {
  if (hasClass(ele, cls)) {
    let newClass = ' ' + ele.className.replace(/[\t\r\n]/g, '') + ' '
    while (newClass.indexOf(' ' + cls + ' ') >= 0) {
      newClass = newClass.replace(' ' + cls + ' ', ' ')
    }
    ele.className = newClass.replace(/^\s+|\s+$/g, '')
  }
}
// 加载文件
export function loadFile(link, id) {
  return new Promise((resolve, reject) => {
    var head = document.getElementsByTagName('head')[0]
    var load = null
    if (id && document.getElementById(id)) {
      load = document.getElementById(id)
      // if (/\.js$/.test(link)) {
      //   load.src = link
      // }else
      if (/\.css$/.test(link)) {
        load.href = link
      } else {
        load.src = link
      }
    } else {
      if (/\.css$/.test(link)) {
        load = document.createElement('link')
        load.type = 'text/css'
        load.rel = 'stylesheet'
        load.href = link
      } else { // (/\.js$/.test(link))
        load = document.createElement('script')
        load.type = 'text/javascript'
        load.src = link
      }
      // load.id = id
      head.appendChild(load)
    }
    load.onload = function() {
      hasLoad.push(link)
      resolve(link, '加载完成')
      console.log(link, '加载完成')
    }
  })
}
const hasLoad = []
// 动态插入js.css到html
export function getload(link) {
  for (var i = 0; i < hasLoad.length; i++) {
    if (!link || hasLoad[i] === link) {
      return new Promise((resolve, reject) => {
        resolve('已加载')
      })
    }
  }
  return loadFile(link)
}
// 动态插入js.css到html
export function loadSource(link) {
  const getArr = []

  if (typeof link === 'string') {
    getArr.push(getload(link))
  } else if (typeof link === 'object') {
    link.forEach((obj) => {
      getArr.push(getload(obj))
    })
  }

  return Promise.all(getArr)
}
// loadSource(['https://cdn.bootcss.com/element-ui/1.4.0/locale/zh-CN.js','https://cdn.bootcss.com/element-ui/1.4.0/theme-default/index.css']).then(()=>{
//       console.log(23123)
//     })

//  插入样式字符串到文档中
export function insertStyle(str) {
  var nod = document.createElement('style')
  nod.type = 'text/css'
  if (nod.styleSheet) { // ie下
    nod.styleSheet.cssText = str
  } else {
    nod.innerHTML = str // 或者写成 nod.appendChild(document.createTextNode(str))
  }
  document.getElementsByTagName('head')[0].appendChild(nod)
}
// 复制对象，深拷贝 ,属性为方法的时候，被丢弃了，放弃使用
// export function copyObj(obj) {
//   return JSON.parse(JSON.stringify(obj))
// }
// 复制对象，深拷贝
export function copyObj(obj) {
  const objClone = Array.isArray(obj) ? [] : {}
  if (obj && typeof obj === 'object') {
    for (const key in obj) {
      if (obj.hasOwnProperty(key)) {
        // 判断ojb子元素是否为对象，如果是，递归复制
        if (obj[key] && typeof obj[key] === 'object') {
          objClone[key] = copyObj(obj[key])
        } else {
          // 如果不是，简单复制
          objClone[key] = obj[key]
        }
      }
    }
  }
  return objClone
}

